Breathing-mask.



E. KUHN.

BREATHING MASK. APPLICATION FILED DEO.28,1906.

938,247. Patented Oct. 26, 1909.

of the invalid. In the mask I arrange an the mask.

two c ambers, one for the nose and one for T 0 all whom it may concern:

provements in Breathing-Masks, of which tion has a good effect for healing said disorders;

.lar valve is connected to the chamber for the nose. This chamber, however, has a UNITED STATES PATENT OFFICE.

ERNST KUHN, OF BERLIN, GERMANY.

BREATHING-MASK.

Specification of Letters Patent,

Patented Oct. 26, 1909.

Application filed December '28, 1906. Serial No. 849,895.

This mask is destined for the use of invalids suffering from disorders in the respiratory organs.

It has been discovered that by supplying lessair to the lungs than is supplied in natural respirationa partial vacuum may be brought about in the chest of the invalid which causes the blood to accumulate in the respiratory organs, and that this accumula- In carrying out my invention, I provide a mask coveringair-tightlynose and mouth air-ti ht partition dividing the mask'into the mouth. "The chamber for the mouth is provided with a valve permitting exhalation onl but rendering it impossible for the invalid to inhale through the mouth. A simi-' second opening for admitting atmospheric airto'it and consequently to t e nose, which opening is arranged to be adjusted by a slide or similar'means so as to supply more or less air to the nose of the inva id.

On the drawings, a is the body of the Z andm by mask, b is the above mentioned partition, 0

is a tightening hose of india rubber or the like attached to the rim of the mask and connected to a hose d-through which compressed'air may be supplied to the hose in order to inflate it and consequently to press it more ti htly against the face. The partition divi es the interior of the mask into two chambers, f and e, the former being connected to the mouth, the latter to the nose.

Both chambers are fitted with check valves i and k which allow exhalation but, on inhaling are. titgiltly pressed against the bushes atmosphericair so as --to .prevent inhalation through them. In the wall oztcthechambere there is a, slot g witha slide h, by means of which the slot can be narrowed at will so as to throttle the air to anydesired degree.

I desire it to be understood that the device shown is only to be considered as an example and that it may be varied in many ways without departing from the spirit of my invention.

Claim.

In a breathing mask covering the mouth and the nose of invalid, a chamber for the mouth and a chamber for the nose, said chambers being rigidly connected and separated from each other by an air-tight partition an opening in the noseart of the mask, and means for adjusting tlie width of said opening.

In testimony whereof I have hereunto signed my name this 17th day of December 1906, in the presence of two subscribing witnesses.

ERNST'KUHN.

Witnesses VVOLDEMAR HAUP'r, HENRY HASPER. 

